GENEVA , Switzerland: A diamond valued at nearly $20 million is to be auctioned in Switzerland within days.
The 100 carat diamond from Russia, named the Alrosa Spectacle, will be auctioned at Christie's in Geneva on May 12.
"This fantastic 100 carat D color diamond was cut from a rough stone that originally weighed more than 200 carats. It was called the Sergei Diaghilev rough diamond and it was mined in 2016," said Christie's Marie-Cecile Cisamolo.
"Between the rough and diamond that we're offering, it took one year and eight months to cut into this perfect stone.
Also to be auctioned among the diamonds are rings, earrings, brooches and other pieces made with diamonds, sapphires and rubies